At the time of his death on November
18, 2015, most of McCormick's archives remained unpublished. Before he
passed away, McCormick always welcomed serious inquiries that might result in the
preservation and publishing of his archives so that the public could benefit
from them. At this time the fate of McCormick's vast unpublished archives
remains uncertain.

McCormick's contribution to
researching and documenting early American music and culture is substantial.
His research helped to uncover histories and biographical information that
would likely have been lost forever had McCormick not conducted his meticulous
field research of geographical locales where some of America's earliest recorded
musicians were born, raised, and traveled. For example, McCormick's
research on Henry "Ragtime Texas" Thomas is noteworthy because Thomas was one of
the oldest African Americans to record in the 1920's. The list of others
on whom McCormick has shed light is vast, and includes Lightnin' Hopkins, Robert
Shaw, Buster Pickens, The George and Hersal Thomas Family (including Sippie
Wallace), Robert Johnson, Blind Lemon Jefferson, Peck Kelley, and Lydia Mendoza,
to name only a few.

McCormick's research was a an important source of
information from which John Tennison drew when researching the history of Boogie
Woogie.

Pictured above are Mack
McCormick and John Tennison at McCormick's house in Houston, Texas on December
26, 2009.